Hemimasticatory spasm in hemifacial atrophy: diagnostic and therapeutic aspects in two patients.

@article{Ebersbach1995HemimasticatorySI,
  title={Hemimasticatory spasm in hemifacial atrophy: diagnostic and therapeutic aspects in two patients.},
  author={Georg Ebersbach and Christian Kabus and Ludwig Schelosky and L Terstegge and Werner Poewe},
  journal={Movement disorders : official journal of the Movement Disorder Society},
  year={1995},
  volume={10 4},
  pages={504-7}
}
We report two cases of hemimasticatory spasm in association with progressive hemifacial atrophy. On the basis of neurophysiological and magnetic resonance imaging assessments, a peripheral irritation of the trigeminal nerve--probably due to entrapment of the motor branches in the infratemporal fossa--is suggested as the cause of the involuntary movement. Local injections of botulinum toxin type A into the masticatory muscles proved to be a successful treatment in both patients. 

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